If by some chance you need a refresher on exactly what kind of an expert Serena is on big butts, allow us to help with that here. And here. And here. You get the idea. The point is, Serena may actually know even more about this topic than she does about tennis. So while we can’t say we’ve ever taken note of this particular aspect of Rafa ourselves, we’ll defer to Serena’s judgment…and only hope that one day we ourselves may possess an impressive enough backside to earn her respect.